a substance for use in a chemical reaction, esp for use in chemical synthesis and analysis
WordReference Random House Learner's Dictionary of American English © 2026
re•a•gent /riˈeɪdʒənt/USA pronunciation
n. [countable][Chemistry.]
WordReference Random House Unabridged Dictionary of American English © 2026- Chemistrya substance that, because of the reactions it causes, is used in breaking down or building up substances.
re•a•gent
(rē ā′jənt),USA pronunciation n. [Chem.]
- Chemistrya substance that, because of the reactions it causes, is used in analysis and synthesis.
- 1790–1800; re(act) + agent; compare act
Collins Concise English Dictionary © HarperCollins Publishers::
'reagent' also found in these entries (note: many are not synonyms or translations):
Benedict's solution
- Grignard reaction
- Grignard reagent
- Nessler's reagent
- Schiff reagent
- acetic anhydride
- baryta water
- catechol
- cellobiose
- cupferron
- excess
- hydrogen sulfide
- hydrogen sulphide
- hydroxylamine
- indole
- inulin
- iodic acid
- nesslerize
- ninhydrin
- orcinol
- oxalic acid
- para-toluidine
- perchloric acid
- phenolsulfonephthalein
- phenyl isocyanate
- potassium acetate
- potassium bromate
- potassium dichromate
- potassium hydroxide
- potassium iodide
- potassium permanganate
- potassium sulfate
- precipitate
- promoter
- quinoline
- reactor
- resorcinol
- selenious acid
- sequestration
- silver nitrate
- sodamide
- sodium bicarbonate
- sodium dichromate
- sodium hydroxide
- spot test
- stain
- test
- test paper
- thioacetic acid
- thromboplastin